Virtualized file server upgrade

A system comprising: a virtualized file server (VFS) comprising a plurality of file server virtual machines (FSVMs), the virtualized file server configured to provide file services to additional virtual machines hosted by one or more host machines; and an upgrade system configured to: receive a request to upgrade the virtualized file server from a first program code version to a second program code version; generate a snapshot of a code image associated with the second program code version, wherein the code image comprises a boot disk image; and provide the snapshot to at least a selected host machine of the host machines via a_virtual disk to cause a virtual machine controller located on the selected host machine to store the snapshot on a first storage device associated with the selected host machine, wherein the snapshot comprises metadata identifying a location of the code image on the first storage device.

A system comprising: a virtualized file server (VFS) comprising a plurality of file server virtual machines (FSVMs), the virtualized file server configured to provide file services to additional virtual machines hosted by one or more host machines; and an upgrade system configured to: receive a request to upgrade the virtualized file server from a first program code version to a second program code version, generate a snapshot of a code image associated with the second program code version, wherein the code image comprises a boot disk image, wherein the code image is stored on a second storage device associated with a server host machine, and provide the snapshot to at least a selected host machine of the host machines via a virtual disk to cause a virtual machine controller located on the selected host machine to store the snapshot on a first storage device associated with the selected host machine, wherein the snapshot comprises metadata identifying a location of the code image on the second storage device and information associating the selected host machine with the server host machine.

One or more computer-readable non-transitory storage media, the media encoded with instructions for performing operations comprising: receiving a request to upgrade a virtualized file server, the virtualized file server comprising a plurality of file server virtual machines (FSVMs) configured to provide file services to additional virtual machines hosted by one or more host machines, from a first program code version to a second program code version; generating a snapshot of a code image associated with the second program code version, wherein the code image comprises a boot disk image; and providing the snapshot to at least a selected one of the host machines via a virtual disk, to cause a virtual machine controller located on the selected host machine to store the snapshot on a first storage device associated with the selected host machine, wherein the snapshot comprises metadata identifying a location of the code image on the first storage device.

One or more computer-readable non-transitory storage media, the media encoded with instructions for performing operations comprising: receiving a request to upgrade a virtualized file server, the virtualized file server comprising a plurality of file server virtual machines (FSVMs) configured to provide file services to additional virtual machines hosted by one or more host machines, from a first program code version to a second program code version, generating a snapshot of a code image associated with the second program code version, wherein the code image comprises a boot disk image, wherein the code image is stored on a second storage device associated with a server host machine, and providing the snapshot to at least a selected one of the host machines via a virtual disk, to cause a virtual machine controller located on the selected host machine to store the snapshot on a first storage device associated with the selected host machine, wherein the snapshot comprises metadata identifying a location of the code image on the second storage device.

A method comprising: receiving a request to upgrade a virtualized file server comprising a plurality of file server virtual machines (FSVMs) configured to provide file services to additional virtual machines hosted by one or more host machines, from a first program code version to a second program code version; generating a snapshot of a code image associated with the second program code version, wherein the code image comprises a boot disk image; and providing the snapshot to at least a selected one of a selected one of the host machines via a virtual disk, to cause a virtual machine controller located on the selected host machine to store the snapshot on a first storage device associated with the selected host machine, wherein the snapshot comprises metadata identifying a location of the code image on the first storage device.

A method comprising: receiving a request to upgrade a virtualized file server comprising a plurality of file server virtual machines (FSVMs) configured to provide file services to additional virtual machines hosted by one or more host machines, from a first program code version to a second program code version; generating a snapshot of a code image associated with the second program code version, wherein the code image comprises a boot disk image, wherein the code image is stored on a second storage device associated with a server host machine; and providing the snapshot to at least a selected one of a selected one of the host machines via a virtual disk, to cause a virtual machine controller located on the selected host machine to store the snapshot on a first storage device associated with the selected host machine, wherein the snapshot comprises metadata identifying a location of the code image on the second storage device.

A method comprising: receiving a request to upgrade a virtualized file server comprising a plurality of file server virtual machines (FSVMs) configured to provide file services to additional virtual machines hosted by one or more host machines, from a first program code version to a second program code version; generating a snapshot of a code image associated with the second program code version, wherein the code image comprises a boot disk image; and providing the snapshot to at least a selected one of a selected one of the host machines via a virtual disk, to cause a virtual machine controller located on the selected host machine to store the snapshot on a first storage device associated with the selected host machine, wherein the snapshot comprises metadata comprising location information associating the selected host machine with a server host machine, wherein the location information includes an identity of an FSVM providing access to a second storage device and a path name of the code image on the second storage device.